Eating Struggles/need advice

We did baby led weaning and my LO was a great eater and ate whatever we ate basically until two weeks ago. He now has a few favorites that he generally will eat like he used to, but most of the time he’s BARELY eating. He will consume as much cold fruit as we will give him.

My question is... at the end of every meal, after he’s been offered whatever we’re having, and refused, should I be giving him one of his favorites to be sure he eats something? Or is that going to create a picky eater? I’m nervous that he’s going to get up and want fed in the middle of the night since hes not getting enough calories in during the day.

Anyone else have advice?